11668999 has 4 divisors (see below), whose sum is σ = 11682720. Its totient is φ = 11655280.

The previous prime is 11668997. The next prime is 11669017. The reversal of 11668999 is 99986611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11668999 - 2¹ = 11668997 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11668997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5494 + ... + 7315.

It is an arithmetic number, because the mean of its divisors is an integer number (2920680).

Almost surely, 2^11668999 is an apocalyptic number.

11668999 is a deficient number, since it is larger than the sum of its proper divisors (13721).

11668999 is an equidigital number, since it uses as much as digits as its factorization.

11668999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13720.

The product of its digits is 209952, while the sum is 49.

The square root of 11668999 is about 3415.9916568985. The cubic root of 11668999 is about 226.8181832494.

The spelling of 11668999 in words is "eleven million, six hundred sixty-eight thousand, nine hundred ninety-nine".